isn't Blackwell on TSMC 4N ? I know it's an Nvidia specific node but that's still 4nm, right ?
and while RTX50 really thirsts for extra RAM, GD7 should provide enough bandwidth, no ? (referring to the "ram limitation" comment)
It's complicated to explain. nVIDIA tuned 5nm for smaller die/tighter voltage/lower-clocks (lower leakage) and called it '4N' bc...well, because marketing. Also, small die equals more money. It's 5nm.
Current Blackwell products are closer to the original clock aim of general 5nm but utilizing the density improvement of 4nm. Basically, they always chose density (because then it's cheaper to make!)
5070 (and probably N48) likely use the performance potential (not density) to a much greater extent, but higher leakage (worse power efficiency). If they want, N48 could use a *ton* of power. But need bw.
Like I've said, nVIDIA's site implies 5070 is ~3150mhz or so, die size implies it's aimed for 3500mhz. The aim of N4P is 3460-3700mhz....but GPUs generally clock a little lower bc lots of units/big chips.
They are (*probably*) going to try to sell you a 4070ti with a different config/clock (less units, higher clock). This way they can excuse it being cheaper without devaluing products w/ more cores.
Basically, they think people are stupid. I am not going to give my opinion on that bc Huang has billions of dollars to prove what they do works.
As you see with the current blackwell, these libraries have ranges. 3165mhz might be the high for the denser library, but the low/easier yield for the higher-performance/less dense library.
Current B20x clocks similar to Navi3 when it's not power constrained, but N4P has a better voltage curve (can clock higher regardless even if dense, but higher over-all usable voltage before power goes nuts)
AMD chooses performance almost every time (make the most out of a small/efficient design). nVIDIA chooses density/power (often more units which use less power than proportional higher clocks.)
The reason why AMD does this is because it's typically cheaper to get the same performance this way, but it uses more power. nVIDIA's products are very concise bc...I don't want to explain it. Too much writing.
The point is they know exactly what they're doing...wayyy in advance...and planned obsolescene is in fact provabley real. I've been trying to explain all this crap, but it's....it's a lot for people to digest, I think.
Huang/nVIDIA are very good marketing people, perhaps the best on the planet, and in-fact he himself is almost-certainly a genius. I, however, am apparently more in-tune to spotting this stuff than most.
Sorry if I didn't write that coherently and/or it comes across wrong. I'm tired.
The ram thing is sooo....arrrgghhh. nVIDIA is trying to sell it that way, yes. They are *trying* to do that. But ram bandwidth is not the same as having that buffer. It's a long conversation...